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Here's a Very Good Reason to Encourage Your Guy to Go Down on You

For most of us, it seems kind of obviously why oral sex is popular among lovers. First of all, it feels good, and second of all, um, WHY DO YOU NEED A SECOND OF ALL?

But...because there's no reproductive purpose to oral sex, scientists decided to test the idea that the act still had an evolutionary purpose when performed on women. Their original hypothesis was that performing oral sex on women was "evolutionarily beneficial" because it helps sperm get and remain inside the uterus. The results, however, weren't so focused on reproduction. Instead, the scientists theorized that because female orgasm might be designed to increase relationship satisfaction and encourage future sexual encounters between the two, it fits the broader hypothesis that "men promote their partner’s orgasm to minimize the risk of her infidelity because women who experience stronger feelings of intimacy and who are more satisfied with their partner are less likely to commit infidelity."

I mean, I hope your guy likes to do things for you in and out of bed just because he wants to make you feel amazing, but in case he needs a reason a little more selfish encouragement, there you go! Cheating prevention! So romantic and sexy! Get busy, gentlemen.